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🧪 MCQs on Cell Wall, Cell Membrane & Endomembrane System | NEET Botany

🌿 Introduction

The cell wall, cell membrane and endomembrane system are important topics in Class 11 Biology and are frequently tested in NEET Biology.

This NCERT-based MCQ practice set covers important concepts related to the cell wall, plasma membrane, membrane transport and major components of the endomembrane system such as the endoplasmic reticulum, Golgi apparatus, lysosomes and vacuoles.

Practice these questions after reading the relevant NCERT concepts to improve accuracy and strengthen your Biology revision for NEET 2027.

🎯 Quick Revision

Plant cell wall: Mainly cellulose, hemicellulose and pectin.

Plasma membrane: Selectively permeable membrane made mainly of lipids and proteins.

Fluid mosaic model: Proposed by Singer and Nicolson.

Endomembrane system: Includes ER, Golgi apparatus, lysosomes and vacuoles.

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Cell Wall, Cell Membrane and Endomembrane System: NCERT MCQs for NEET 2027

Cell Wall Cell Membrane and Endomembrane System MCQs are useful for NEET Biology preparation because these topics involve many direct NCERT-based facts and conceptual questions.

This practice set focuses on the structure and functions of the cell wall, plasma membrane and endomembrane system. It also includes questions on transport, membrane proteins, endoplasmic reticulum, Golgi apparatus, lysosomes and vacuoles.

Cell Wall, Cell Membrane and Endomembrane System: Important Topics

Topic NEET Focus
Cell Wall Composition, layers and functions
Plasma Membrane Structure, lipids, proteins and fluid mosaic model
Membrane Transport Diffusion, osmosis, active transport
Endoplasmic Reticulum RER, SER and their functions
Golgi Apparatus Modification, packaging and secretion
Lysosomes Digestive enzymes and intracellular digestion
Vacuoles Storage and maintenance of cell conditions

1. MCQs on Cell Wall

1. What is the primary component of the plant cell wall?

A. Chitin
B. Cellulose
C. Peptidoglycan
D. Glycogen

✅ Answer: B. Cellulose

2. Which of the following organisms lacks a cell wall?

A. Bacteria
B. Plants
C. Mycoplasma
D. Fungi

✅ Answer: C. Mycoplasma

3. The middle lamella of a plant cell wall is mainly composed of:

A. Cellulose
B. Chitin
C. Pectin
D. Protein

✅ Answer: C. Pectin

4. The cell wall provides:

A. Mechanical support
B. Protection
C. Shape to the cell
D. All of the above

✅ Answer: D. All of the above

5. The primary cell wall is generally:

A. Flexible and capable of expansion
B. Completely impermeable
C. Made only of proteins
D. Present only in animal cells

✅ Answer: A. Flexible and capable of expansion

🧠 NEET Tip: Remember: Middle lamella → Pectin and plant cell wall → Cellulose.

2. MCQs on Cell Membrane

6. The plasma membrane is mainly composed of:

A. Cellulose and proteins
B. Phospholipids and proteins
C. Chitin and lipids
D. DNA and proteins

✅ Answer: B. Phospholipids and proteins

7. The fluid mosaic model of the plasma membrane was proposed by:

A. Watson and Crick
B. Schleiden and Schwann
C. Singer and Nicolson
D. Robert Hooke

✅ Answer: C. Singer and Nicolson

8. The plasma membrane is described as selectively permeable because it:

A. Allows all substances to pass freely
B. Allows selected substances to cross the membrane
C. Does not contain proteins
D. Is completely rigid

✅ Answer: B. Allows selected substances to cross the membrane

9. Which component contributes significantly to membrane fluidity in animal cells?

A. Cholesterol
B. Cellulose
C. Glycogen
D. Starch

✅ Answer: A. Cholesterol

10. In a phospholipid molecule, the hydrophilic part is the:

A. Fatty acid tails
B. Phosphate-containing head
C. Hydrocarbon chain only
D. Protein component

✅ Answer: B. Phosphate-containing head

11. The hydrophobic part of a phospholipid is mainly formed by:

A. Fatty acid tails
B. Phosphate group
C. Carbohydrate group
D. Amino acids

✅ Answer: A. Fatty acid tails

💡 Remember:
Hydrophilic = water-loving
Hydrophobic = water-fearing

3. MCQs on Membrane Transport

12. Movement of molecules from a region of higher concentration to a region of lower concentration is called:

A. Active transport
B. Diffusion
C. Endocytosis
D. Exocytosis

✅ Answer: B. Diffusion

13. Osmosis refers to the movement of:

A. Solute molecules only
B. Water through a selectively permeable membrane
C. Proteins through a membrane
D. ATP molecules

✅ Answer: B. Water through a selectively permeable membrane

14. Active transport generally requires:

A. ATP or another energy source
B. No energy
C. Only oxygen
D. Cellulose

✅ Answer: A. ATP or another energy source

15. Movement of substances against their concentration gradient is:

A. Diffusion
B. Osmosis
C. Active transport
D. Passive transport

✅ Answer: C. Active transport

16. Endocytosis involves:

A. Release of substances outside the cell
B. Uptake of materials into the cell by membrane infolding
C. Movement through plasmodesmata only
D. Simple diffusion

✅ Answer: B. Uptake of materials into the cell by membrane infolding

17. Exocytosis is associated with:

A. Release of substances from the cell
B. Uptake of water only
C. DNA replication
D. Cell wall synthesis only

✅ Answer: A. Release of substances from the cell

4. MCQs on Endomembrane System

18. Which of the following is part of the endomembrane system?

A. Endoplasmic reticulum
B. Golgi apparatus
C. Lysosomes
D. All of the above

✅ Answer: D. All of the above

19. Which organelle is primarily involved in protein synthesis?

A. Smooth ER
B. Rough ER
C. Lysosome
D. Vacuole

✅ Answer: B. Rough ER

20. Ribosomes attached to the rough endoplasmic reticulum are mainly associated with:

A. Protein synthesis
B. Lipid storage
C. Photosynthesis
D. DNA replication

✅ Answer: A. Protein synthesis

21. Smooth endoplasmic reticulum is especially associated with:

A. Lipid synthesis
B. Ribosome production
C. Chromosome formation
D. Cell division only

✅ Answer: A. Lipid synthesis

22. The Golgi apparatus is mainly involved in:

A. Modification and packaging of materials
B. DNA replication
C. Glycolysis
D. Photosynthesis

✅ Answer: A. Modification and packaging of materials

23. Lysosomes contain:

A. Hydrolytic enzymes
B. Chlorophyll
C. DNA only
D. Cellulose

✅ Answer: A. Hydrolytic enzymes

24. Lysosomes are involved in:

A. Intracellular digestion
B. Protein synthesis
C. Photosynthesis
D. Transcription only

✅ Answer: A. Intracellular digestion

25. The large central vacuole of a mature plant cell is surrounded by:

A. Tonoplast
B. Nuclear envelope
C. Cell wall
D. Plasmalemma only

✅ Answer: A. Tonoplast

5. Rough ER vs Smooth ER

Feature Rough ER Smooth ER
Ribosomes Present Absent
Major function Protein synthesis Lipid synthesis and other functions
Appearance Ribosome-studded No ribosomes

6. Golgi Apparatus – NEET Highlights

  • Consists of flattened membrane-bound sacs called cisternae.
  • Receives materials from the endoplasmic reticulum.
  • Modifies and packages proteins and other molecules.
  • Participates in secretion.
  • Helps in the formation of lysosomes.
🎯 NEET Tip: Think of the Golgi apparatus as a cellular processing, sorting and packaging centre.

7. Lysosomes – Important Points

  • Membrane-bound organelles.
  • Contain hydrolytic enzymes.
  • Function in intracellular digestion.
  • Help digest worn-out cellular components.
  • Can participate in autophagy.

8. Vacuoles – Important Points

  • Vacuoles are membrane-bound structures.
  • The membrane surrounding a plant vacuole is called the tonoplast.
  • Plant vacuoles contain cell sap.
  • They contribute to storage and maintenance of cell turgidity.

9. Mixed NCERT-Based MCQs

26. Which structure separates the cell contents from the external environment?

A. Cell membrane
B. Nucleolus
C. Ribosome
D. Chromosome

✅ Answer: A. Cell membrane

27. Which structure is absent in prokaryotic cells?

A. Plasma membrane
B. Ribosomes
C. Membrane-bound nucleus
D. Cytoplasm

✅ Answer: C. Membrane-bound nucleus

28. Which organelle forms a major transport network within the cytoplasm?

A. Endoplasmic reticulum
B. Lysosome
C. Nucleolus
D. Centriole

✅ Answer: A. Endoplasmic reticulum

29. Which organelle is commonly called the suicidal bag of the cell?

A. Golgi apparatus
B. Lysosome
C. Ribosome
D. Vacuole

✅ Answer: B. Lysosome

30. Which organelle is most directly associated with sorting and packaging of cellular products?

A. Golgi apparatus
B. Mitochondrion
C. Ribosome
D. Nucleus

✅ Answer: A. Golgi apparatus

10. Cell Organelles: NEET Quick Table

Structure Key Function
Cell Wall Support, protection and shape
Plasma Membrane Selective transport and boundary
Rough ER Protein synthesis
Smooth ER Lipid synthesis
Golgi Apparatus Modification, sorting and packaging
Lysosome Intracellular digestion
Vacuole Storage and turgidity

11. NEET Memory Tricks

🧠 Cell Wall:
Cellulose = Plant wall

🧠 Middle Lamella:
Pectin

🧠 Plasma Membrane:
Lipids + Proteins

🧠 Fluid Mosaic Model:
Singer + Nicolson

🧠 RER:
Ribosomes → Protein

🧠 SER:
Smooth → Lipid synthesis

🧠 Golgi:
Modify → Sort → Package

🧠 Lysosome:
Hydrolytic enzymes → Digestion

🧠 Vacuole:
Tonoplast → Vacuole membrane

🌿 NEET Biology for Odisha Students

Students preparing for NEET in Odisha can use these NCERT-based Cell Biology MCQs for concept revision and practice. The questions are useful for students studying Class 11 Biology and preparing for NEET Biology examinations.

For Odisha students, a strong NCERT foundation combined with regular MCQ practice can make difficult Cell Biology topics easier to revise.

Explore Odisha NEET Biology Resources →

📌 Final NEET Revision

Before moving to the next Biology chapter, make sure you can answer these five questions:

  1. What is the main component of the plant cell wall?
  2. Who proposed the fluid mosaic model?
  3. Where does protein synthesis associated with RER occur?
  4. What is the major function of the Golgi apparatus?
  5. What is the function of lysosomes?

NCERT first + concept understanding + MCQ practice + repeated revision is a strong strategy for NEET Biology preparation.

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